It's regrettable that the publication of our paper that might supersede Feynman's explanation of the mirror puzzle was made after his passing. It would have been quite pleasant to talk with him about this puzzle.The mirror puzzle is a fairly famous teaser expressed as: "Why does a mirror reverse left and right but not top and bottom?" Recently I just wrote the essence of our paper on Quora in reply to a question there .
- "TED-X Caltec pays tribute to Feynman," Analysis by Jennifer Ouellette. "Caltech hosted its first ever TED-X conference last Friday, with talks by a diverse lineup of speakers all celebrating famed physicist Richard Feynman . . ." Discovery, News (January 18, 2011).
- "The mirror puzzle: Reversal is attributed to the direction defined last." IDEA & ISAAC: Femto-Essays (January 14, 2011).